IRA dissidents suspected in Northern Ireland car bomb blast

Police in Northern Ireland said Sunday they suspect Irish Republican Army dissidents were behind a car bombing outside a courthouse in the city of Londonderry.

Two men in their 20s have been arrested.

The device was placed inside a hijacked delivery vehicle and exploded Saturday night as police, who had received a warning, were evacuating the area. There were no reports of injuries.

The Police Service of Northern Ireland posted a photograph of a vehicle in flames and urged the public to stay away.

Police and army bomb-disposal experts remained at the scene on Sunday.

Assistant Chief Constable Mark Hamilton said the bomb had been a "crude" and unstable device, and called the attack "incredibly reckless."